Chemical water filtration methods - innovative solutions for clean water

Chemical methods of water filtration are a key form of purification technology. As the name suggests, they focus on removing contaminants using chemical substances. In recent years, there has been significant development and innovation in this field, contributing to increased efficiency and safety of these methods. Below, we will discuss the main types of this purification method, focusing on the most common applications, benefits, and challenges.

Adsorption on activated carbon

Adsorption on activated carbon is an effective method for removing chemical substances from water. Despite its simplicity, it is very effective. This process works by attracting and retaining chemicals on the surface of the porous structure of activated carbon.
Application of activated carbon

• Removal of organic substances: Effective in eliminating organic substances, chlorine, pesticides, and chemical compounds from water.
• Drinking water purification: Used in drinking water treatment systems to improve the taste and smell of water.

Advantages of using activated carbon

• Versatility: Effective in adsorbing a variety of substanceschemical.
• Durability: Activated carbon has a long lifespan and can be regenerated.

Limitations of the activated carbon adsorption method

• Selectivity: Less effective in removing certain contaminants, such as mineral salts.

Ozone purification

Ozonation is a chemical process in which ozone isintroduced into water to destroy bacteria, viruses, and organic substances.

Application of ozone

• Water disinfection: Effective in eliminating microorganisms, bacteria, or viruses.
• Removal of unpleasant odors and tastes: Ozone improves the taste and smell of water by oxidizing organic substances.

Advantages of using ozone

• Speed of action: Ozone works quickly, significantly speeding up the purification process.
• No waste: After using ozone, there are no substances that negatively affect health.

Limitations of ozone

• Costs: The process of ozone production can be expensive.

Coagulation processes and

Coagulation is the process of adding chemical substances, known as coagulants, to water. Coagulants cause fine particulate impurities to begin to clump together into larger aggregates. This method, called flotation, facilitates their subsequent removal from the water.

It is worth remembering: Ozonation is particularly effective in purifying water in large water supply systems.

Flocculation, on the other hand, is the stage that follows coagulation. During this process, the water is gently mixed, causing the already formed particles to start joining into larger structures. These are easier to remove as they settle to the bottom of the water body or can be more easily captured by other filtration processes.

Application of flocculation and coagulation

• Removal of colloidal particles:Effective in removing colloidal particles, silicates, and some chemical substances.
• Preparation of water for mechanical filtration: This process often precedes the stage of mechanical filtration.

Advantages of coagulation and flocculation

• Effective removal of suspended substances: Coagulation and flocculation help in effectively removing finepollutants.

Limitations of flocculation and coagulation processes

• The need for precise dosing: Flocculation and coagulation require precise dosing of coagulant substances.

Chemical filtration – summary

Chemical methods of water filtration (including, for example, pool chemistry) are an integral part oftreatment and disinfection processes. The choice of the appropriate one depends on the specific nature of the contaminants in the water and may require the application of a combination of different processes. In today's world, where the emphasis on water quality is very high, chemical filtration methods are becoming an essential tool for ensuring the safety and cleanliness of water resources.

It's worth remembering: Coagulation and flocculation are key processes inwater purification that supports other filtration methods.